Company lists · Data refreshed September 2026
Top 25 Security architecture consultants based in the United Kingdom
RevenueBase identified 581 security architecture consultants headquartered in the United Kingdom as of September 2026 and tracks 5,061 professional contacts across them, including 1,621 with verified work emails and 397 with mobile numbers. London is the largest hub.
This list covers security architecture consultants headquartered in the United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, how directly it supports the match, and when it was last checked. Data refreshed September 6, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest security architecture consultants based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 502 | ||||
“SecurityHQ, a global cybersecurity company pioneering Security Performance Engineering for stronger operational performance and resilience.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 2 | 260 | ||||
“We are a global boutique, specializing exclusively in the convergence of identity-driven security and networking.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 3 | 143 | ||||
“Logiq is a UK-based cyber security consultancy and secure managed services provider supporting defence, government, and critical national infrastructure (CNI) organisations where…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 4 | 126 | ||||
“We are TRPGLOBAL, your strategic partner in helping you with the complexities of risk management.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 5 | 125 | ||||
“KHIPU Networks is an award winning international Cyber Security Company delivering a wide range of network, wireless and security solutions, technologies and services across…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 6 | 97 | ||||
“As an independent IT security specialist, Caretower provide comprehensive solutions to individual problems, thus allowing our recommendations to be unbiased.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 7 | 85 | ||||
“Amethyst Risk Management is a leading cybersecurity consultancy supplying expert services and support to the UK Government, Defence, Operators of Essential Services, and the…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 8 | 74 | ||||
“Saepio increase awareness, reduce risk and improve security in a continually evolving threat landscape.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 9 | 68 | ||||
“Sytel Reply is the Reply Company focused on Networks and Security.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 10 | 61 | ||||
“MDSec are a UK based consultancy with a passion for information security.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 11 | 60 | ||||
“Many organisations are dealing with multiple frameworks, overlapping tools, disconnected ownership, and increasing pressure from regulators, customers, and boards.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 12 | SQR Group Security Solutions LTDIndirect evidence | 58 | |||
“In today’s advanced, interconnected world, protecting the infrastructure that allows society to function is crucial.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 13 | 57 | ||||
“CyberLab is the UK-leading cyber security consultancy and managed services provider, trusted by over 1,200 enterprise businesses, government departments, and household names to…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 14 | 44 | ||||
“CornerStone is an award winning, independent, security and digital building consulting firm with headquarters in the UK.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 15 | Secforce LTDPartial evidence | 39 | |||
“SECFORCE are vendor independent offensive security specialists providing effective business risk intelligence and strategic security consulting.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 16 | 38 | ||||
“Omerta - A Global Security Technology and Services Company.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 17 | 36 | ||||
“Secarma exists to keep the world safe.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 18 | 31 | ||||
“SPECIALISTS IN IT SECURITY AND COMPLIANCE Our goal is to help customers define, develop and implement information security and compliance services, no matter what stage of the…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 19 | 26 | ||||
“Based in Manchester UK, we are an independent Cyber Security Consultancy providing Security services across a wide range of markets, from multi-national Corporate Organisations…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 20 | 24 | ||||
“i3Secure is a cyber security and information assurance consultancy protecting the confidentiality, integrity and availability of data across defence, public and private sectors.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 21 | 24 | ||||
“More than just a manufacturer, we offer a full service.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 22 | Se24Strong evidence | 24 | |||
“A core member of the Chelsea Group Security & Crisis Management Division, Security Exchange is dedicated to the provision of specialist consultancy on a worldwide basis…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 23 | 22 | ||||
“Gradian offers pre-sales support, bespoke consultancy and managed services to protect your most critical assets from cyber threats.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 24 | 21 | ||||
“Chaleit is a cyber security management consultancy that aligns business context with real-world capability to solve complex risks.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 25 | 21 | ||||
“Aindale, established in 1985, is a leading provider of IT solutions and services.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 581 security architecture consultants based in the United Kingdom
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Security architecture consultants based in the United Kingdom at a glance
As of Sep 6, 2026Companies by employee count
Verified emails by last verification
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among security architecture consultants, so some rows will be adjacent to the category rather than pure plays. The description and evidence rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in the United Kingdom whose own description of what they do matches “security architecture consultants”. Matching reads each company's description, not its industry code or its name.
- What we exclude
- Companies whose own description does not clearly place them among security architecture consultants, and records with no verified work email. Companies headquartered outside United Kingdom are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and an evidence rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 1,621 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 6, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Security architecture consultants by metro
- Security architecture consultants in London197
Frequently asked
How many security architecture consultants are there based in the United Kingdom?
RevenueBase identified 581 security architecture consultants headquartered in the United Kingdom as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Securityhq, headquartered in Gb, tops this list with the largest team on record.
Which city has the most security architecture consultants?
London leads with 197 headquartered companies, followed by Manchester (16) and Bristol (9).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,621 verified decision-maker contacts tracked across these 581 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 6, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
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